US3547890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for drying polyester particles
Assignee: Teijin Ltd
•
Filing: 1968-08-12
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Granted: 1970-12-15
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Expires: 1988-08-12
Abstract
No abstract record available.
Inventors
- 👤 Seibi Yamada
- 👤 Yoshiharu Asada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:23
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; B; B29; B29B; B29B13/00; B29B13/06; B29B13/065; B29B9/00; B29B9/16; C08G; C08G63/00; C08G63/78; C08G63/785; C08G63/88; C08G63/90; F; F26; F26B; F26B1/00; F26B1/005; F26B17/00; F26B17/12; F26B17/14; F26B17/1433; F26B21/00; F26B21/20; F26B21/25; F26B21/40; F26B25/00; F26B25/04; C08J2367/00; C08J2367/02; F26B2200/00; F26B2200/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |